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Issue 6, 2010
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The double role of p-toluenesulfonic acid in the formation of ZnO particles with different morphologies

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Abstract

The role of p-toluenesulfonic acid (p-TSA) as a catalyst and/or morphology-directing agent for the formation of ZnO particles with different sizes (20 to 250 nm) and shapes (from bullet-like to complex, cauliflower architectures) was studied. One-pot, low-temperature syntheses were performed using reaction mixtures containing zinc acetylacetonate hydrate (zinc oxide precursor), 1-butanol (medium and oxygen source) and different concentrations of p-TSA. The catalytic role of the p-TSA was pronounced when the p-TSA concentration was kept low, while an elevated acid concentration inhibits the reactivity of the ZnO precursor toward the alcoholysis, presumably due to the adhesion of the p-TSA on its surface. The abundance of ZnO surface chelation with the p-TSA controls the ZnO particle growth and shape as well as the self-assembly of ZnO nanocrystals into complex architectures. The particles' characterization and growth were assessed using TEM, HRTEM, FE-SEM, XRD and FTIR, while the reaction mechanism was proposed on the basis of 13C and 1H NMR experiments.

Graphical abstract: The double role of p-toluenesulfonic acid in the formation of ZnO particles with different morphologies

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Supplementary files

Article information


Submitted
19 Nov 2009
Accepted
05 Jan 2010
First published
28 Jan 2010

CrystEngComm, 2010,12, 1862-1868
Article type
Paper

The double role of p-toluenesulfonic acid in the formation of ZnO particles with different morphologies

G. Ambrožič, I. Djerdj, S. D. Škapin, M. Žigon and Z. C. Orel, CrystEngComm, 2010, 12, 1862
DOI: 10.1039/B924412N

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